50.6k views
4 votes
Which graph correctly solves the equation below?
-x² – 1 = 2x^2 – 4

User RedZ
by
8.3k points

2 Answers

7 votes

Answer: Hope this helps. I didn't see any graphs posted on your question.

Explanation:

y = -x²-1

y = 2x²-4

Edit: posted wrong screenshot :/

here is the actual one lol

Which graph correctly solves the equation below? -x² – 1 = 2x^2 – 4-example-1
User Roy Chan
by
8.9k points
2 votes

The correct graph is graph B, which shows that the equation has two roots at approximately x = -1.414 and x =1.414.

The equation provided is: -x² – 1 = 2x^2 – 4.

To solve this equation, we need to rearrange it into quadratic form by moving all terms to one side and setting it equal to zero:

3x² - 3 = 0.

Now, we need to solve for x using the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

For our equation, a = 3, b = 0, and c = -3:

x = (0 ± √(0² - 4(3)(-3))) / (2(3))

x = ± √(36 / 18) = ± √2

So, the correct graph is graph B, which shows that the equation has two roots at approximately x = -1.414 and x =1.414.

Which graph correctly solves the equation below? -x² – 1 = 2x^2 – 4-example-1
User EfForEffort
by
9.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories